[gnome-documents] presentation: Prevent inactive displays from being selected

[Debarshi Ray <debarshir src gnome org>]

commit 2e00b2c6ddb42f5c790b07d2768993746e4f5fa7
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Sep 29 18:18:08 2014 +0200

    presentation: Prevent inactive displays from being selected
    
    eg., if one of them has been turned off from Settings -> Displays.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=737580

 src/presentation.js |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/src/presentation.js b/src/presentation.js
index 20e5b93..4ee28a1 100644
--- a/src/presentation.js
+++ b/src/presentation.js
@@ -164,11 +164,18 @@ const PresentationOutputChooser = new Lang.Class({
 
                 this._box.show_all();
             }
+
+            if (!output.is_active())
+                row.sensitive = false;
         }
     },
 
     _onActivated: function(box, row) {
-        this.output = row.get_child().output;
+        let output = row.get_child().output;
+        if (!output.is_active())
+            return;
+
+        this.output = output;
         this.emit('output-activated', this.output);
         this.close();
     },